XMART BT-24 Bluetooth Audio Adapter, 2-in-1 Transmitter and Receiver, 3.5 mm AUX

One slider switch flips the adapter between Bluetooth 5.3 receiving and transmitting.

The XMART BT-24 Bluetooth audio adapter works two ways: as a receiver it brings wireless streaming to any AUX-equipped stereo, and as a transmitter it sends sound from a TV, laptop or in-flight system to Bluetooth headphones. It plugs in via 3.5 mm jack, charges over USB-C and runs up to 13 hours per charge, with an airline adapter and USB-C cable in the box.

Two modes, one slider switch

Switching between receive and transmit happens on the unit itself, with no app and no reconfiguration. In receiver mode a phone or tablet feeds an AUX stereo; in transmitter mode the audio travels the other way, out to wireless headphones or a speaker.

Wireless sound for the car and older gear

Cars with an AUX input, amplifiers and passive speakers without Bluetooth gain smartphone streaming the moment the jack is plugged in. Wireless range reaches 10 m.

Two Bluetooth devices at once

Two people can watch a film through separate wireless headphones from a single source. It also pays off on the road, sharing audio from a tablet or in-flight system.